Non-leaking fountain pen



June 30, 1931. R. H. WHITEHEAD v NONLEAKING FOUNTAIN PEN Filed Deo. 2s,1929 .l gn/021112015,-

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PatenitedJunef, 'i 1,931 fi ROBERT 1L WHITEHEAD; or',V SALTLunizjonfsr', UTAH, As'sIGnn 'oFjoNE-TENTH l'ro n This invention relates"toa fountain' vpen,

and more particularly a nonf'leakng'jjeunr` tain Peno"ItSPIinciPal'objeCt'S are:

'LFrst;y To prevent" the leaking'ofthe`Yv ""f'5 into the cap VwhentherapenY is not'in use, that vistosay,v when the cap is screwedl intoplace f over the point, 'inwhatfniightbbe oalle'dy the closed' position.

broughtfdown? over p the. headfn tionedinsubstantial;regstryoowthfthefifalve n seat, theball being-` movably"he1d1l5yo2the o barrelftoan rextent sllfflcienttoiiallofvv thefball o'l 35 n'grdown ntofthe:fedl-grooveoofthe' pen. fi,

` -gflihe features'of ,this yinventioriffoiffvvlrriclll the protectionvof-ifLetters Patentjofthe United 1 States `f is.o.fde'si red,'. are;:collectively 22.40 gronpedjn .the"'c1ams onoludingthisfspeil,v

-fication.=l` f, *In-fthe Vidrawin'gsi, which Vilhistratfes 'several lspeefcjformsofflmyonventio fFig [l:V represents Aan elevation o 4f, "ajcrossfsecton taken on line 1 *Figo 6am?, :vertical eenter'sectonsilluls- '6o f 20; forl linstance an ordinary steel ball',` ispo frfInioqulppmg "dus 'Pffemnt 4olioopp@offro-orti@ fthe beffa f being'blokell'away; e o

Fig.V` 2, a Vertical Cent v"rlseotion taken i" v ing'othe 'capl screwedclear' up vinto the protective postonon the barrelyand theba'fllvialjve' pushed inwardlyfinto 'an alternatek position", o .55

oookoo owoyoonof 'latter being lfrietonally heldaft '1444110117 "aseat`jl`8i`and"stillileave suficientbearing sur;

'frietionallyfsealingthevink'saoflustabove .S5 iohoffoodrp-oosogo1ofiooho' opooodofiood-"boo' o. tween the: sea/11158l"and tHe-"inside surface o fgf `l .toho-iokzooo: ohoooooooifooooiog omoooh `fono the fedopessagefl; n The valve may consistofaba195,1Whh 00in the normal writing condition of the pen structure is positioned asindicated in Fig. 2, where the resiliency of the soft rubber inl sac 12tends to push the ball outwardly through a frusto-conical opening 20formed in the barrel 14. The ball, however, prevented from passingentirely through this opening, due to the fact that the smaller diameterof the frusto-conical opening is less than the meridian diameter of theball. Thus,the resiliency of the rubber sac keeps the mouth of ,thefeed. passage l5 normally open. lVhen it is desired to put the pen awayas for instance into the users pocket, the capjs applied in theusualway, the merc act of screwing the cap into place gradually pushing theball 19 inwardly to a position, such as indicated in Fig. 3, where theball has forced a portion of the soft rubber wall of the sac onto theseat 1S, forming a substantially liquid-tight closurev between the inkin the sac and the lfeed passage 15. A clearance space 18-1 may beprovided to insure a good bearing,r on seat 18.

In order to resist the wear and tear upon the sac caused by the frequentin and out movement of the'ball 1,9, it may be desirable to reinforcethe circular Wall of the sac `adj acent its opening, as indicated at 24,Fig.4 8, the purpose being to have lthe ball contact theV reinforcedportion at a point anywhere along a belt Vline 24-1, somewhat as`indicated by the dotted circle 19-1 in Fig. 8.

In order to [facilitate manufacturing operations, it may be desirable t0construct the Yen as indicated in Fig. 6, where the head O has extendingthrough it the cylindrical bore 31, in which is snugly fitted the feedelement ,3-2. This feedfelement may be provided with the enlargedportion 34 which fits snugly into the ,ink sac. In the enlarged QI'tionis formed the seat 35 to provide the earing for the ink` sac 36whenpushed inwardly by the valve 37. The groove 38 leads from the mouth33 to the pen-point 39.

In order to readily adapt the pen struc.- ture to pen-points ofdifferent sizes, it may be' further desirable to make the feed niemberin two parts as indicated in Fig. 7, the lower part 42v being made invarious lengths while the upper part 43 may be uniform. The valve seatmay be formed at 45 so as to receive the contactingl portion of the inksac when acted upon by the valve 47. The feed mouth, located between thesac and the seat 45 leads into the passage 48, which in turn leads intothe feed groove 49 formed in the feed member 42, and so to the pen-point.lVhile specific embodiments of this invention are herein shown anddescribed, it isto Having fully described my invention, what I claim is:

1. A fountain pen, including in combination an ink sac of resilientmaterial, a feed member having a valve seat disposed to contact theinside of said sac, a valve on the outside of said ink sac, said valvebeing positioned to register with the said valve seat, and a barrelaround said ink sac, said barrel having an opening in which said valveis positioned so as to have in .and out motion.

2,. A fountain pen, including in combination, an ink sac, a headextending and having a valve seat within said ink sac; a barrelenclosing said ink sac ,and having an .opening substantially in registrywith said valve seat, said head being secured in said barrel; a valvepositioned in said opening so as to bear against the outside of said inksac and protrude outside said barrel, and means for pushing said valveinwardly until a portion of said ink sac lbears on said valve seat.

3. A fountain pen, including in combination, aninlr sac, a headextending intovsaid ink sac, means defining a valve seat in said headadjacent la portion of said ink sac, a ball valve on the outside of saidink sac, said ball valve registering with said valve seat., a barrelsurrounding said ink sac andconnected to said head, means defining anopening in said barrel, said opening located to receive said ball, saidball normally protruding outside said barrel, and a capfor said barrel,said cap being operative to push said ball inwardly, thereby-causing aportion of said sac to be forced against said valve seat.

4. A fountain pen, including in combination, a head, a feed memberextending through said head, said feed member having an enlargedvportion with a valve formed therein above said head, an ink sac having aportion thereof surrounding said enlarged portion, a valve in registrywith said valve seat, a barrel surrounding said ink Sac and connected tosaid head, said barrel having 'an opening to receive said valve, saidvalve normally protruding to theoutside of said barrel, and meansoperative to push said valve inwardly and force said sac against lsaidseat. Y

5.l A fountain pen, including in combination, a head khaving a boredefined therein, a feed structure consisting of a lower part and anupper part having a valve seat secured in said head, a pen-pointadjacent Vsaid lower part, an ink sac around said upper part and havinga portion adjacent said valve seat, means defining ink passages leadingfrom a point in proximity to said valve seat to said pen-point, a ballinregistry with said valve seat and bearing on the outside of said inksac, a barrel having an opening for supporting said valve, said ballprotrud. ing outside said barrel and means for forcing said valveinwardly. Y

6. A `fountaikn'pen, including in rcombnation, a barrel, an link sacwithin said barrel,

ka lmember having an' ink'fed leadin from said sac, means'denn an ink*fee*v valve seat mslde sold sac, a al1 contactlng-sald sac in registry`with' said valveseat, a por- 'ton of said ball extending beyond theouter surface of said barrel and means forseating j said ball'. v y y Ky,

In testimony whereof, I sign my `'name y Y hereto. y v, v Y f 1 ROBERTH. WHITEHEAD.

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